li {
    list-style: none;
}

a {
    text-decoration: none;
}

* {
    margin: 0;
    padding: 0;
}

body {
    background-color: #9eb2b4;
}

.focus {
    overflow: hidden;
    position: relative;
    width: 520px;
    height: 280px;
    margin: 100px auto;
    box-shadow: 10px 10px 20px rgba(0, 0, 0, 0.6);
    border-radius: 40px;
    background-color: aqua;
}

.focus ul {
    position: absolute;
    top: 0;
    left: 0;
    width: 600%;
}

.focus ul li {
    float: left;
}

.arrow-l {
    display: none;
    position: absolute;
    top: 50%;
    left: -12px;
    margin-top: -20px;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, .3);
    text-align: center;
    line-height: 40px;
    color: #fff;
    font-size: 18px;
    border-radius: 0 50% 50% 0;
    z-index: 999;
}

.arrow-r {
    display: none;
    position: absolute;
    top: 50%;
    right: -12px;
    margin-top: -20px;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, .3);
    text-align: center;
    line-height: 40px;
    color: #fff;
    font-size: 18px;
    border-radius: 50% 0 0 50%;
    z-index: 999;
}

.circle {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
}

.circle li {
    float: left;
    width: 12px;
    height: 12px;
    border: 2px solid rgba(255, 255, 255, .5);
    margin: 0 4px;
    border-radius: 50%;
    cursor: pointer;
}

.current {
    background-color: #fff;
    box-shadow: 0 0 10px #fff;
}

.show {
    display: block;
    animation-name: show;
    /* animation-duration: 2000;
    animation-timing-function: linear; */
}

.disapper {
    display: none;
}